Using the Pattern Generator. Online Help

Transcription

1 Using the Pattern Generator Online Help

2 Notices Agilent Technologies, Inc No part of this manual may be reproduced in any form or by any means (including electronic storage and retrieval or translation into a foreign language) without prior agreement and written consent from Agilent Technologies, Inc. as governed by United States and international copyright laws. Trademarks Microsoft, MS-DOS, Windows, Windows 2000, and Windows XP are U.S. registered trademarks of Microsoft Corporation. Adobe, Acrobat, and the Acrobat Logo are trademarks of Adobe Systems Incorporated. Manual Part Number Version Edition April 10, 2009 Available in electronic format only Agilent Technologies, Inc Garden of the Gods Road Colorado Springs, CO USA Warranty The material contained in this document is provided as is, and is subject to being changed, without notice, in future editions. Further, to the maximum extent permitted by applicable law, Agilent disclaims all warranties, either express or implied, with regard to this manual and any information contained herein, including but not limited to the implied warranties of merchantability and fitness for a particular purpose. Agilent shall not be liable for errors or for incidental or consequential damages in connection with the furnishing, use, or performance of this document or of any information contained herein. Should Agilent and the user have a separate written agreement with warranty terms covering the material in this document that conflict with these terms, the warranty terms in the separate agreement shall control. Technology Licenses The hardware and/or software described in this document are furnished under a license and may be used or copied only in accordance with the terms of such license. Restricted Rights Legend If software is for use in the performance of a U.S. Government prime contract or subcontract, Software is delivered and licensed as Commercial computer software as defined in DFAR (June 1995), or as a commercial item as defined in FAR 2.101(a) or as Restricted computer software as defined in FAR (June 1987) or any equivalent agency regulation or contract clause. Use, duplication or disclosure of Software is subject to Agilent Technologies standard commercial license terms, and non-dod Departments and Agencies of the U.S. Government will receive no greater than Restricted Rights as defined in FAR (c)(1-2) (June 1987). U.S. Government users will receive no greater than Limited Rights as defined in FAR (June 1987) or DFAR (b)(2) (November 1995), as applicable in any technical data. Safety Notices CAUTION A CAUTION notice denotes a hazard. It calls attention to an operating procedure, practice, or the like that, if not correctly performed or adhered to, could result in damage to the product or loss of important data. Do not proceed beyond a CAUTION notice until the indicated conditions are fully understood and met. WARNING A WARNING notice denotes a hazard. It calls attention to an operating procedure, practice, or the like that, if not correctly performed or adhered to, could result in personal injury or death. Do not proceed beyond a WARNING notice until the indicated conditions are fully understood and met.

3 Pattern Generator At a Glance The Agilent Technologies 16720A pattern generator is used by digital design teams to emulate digital signals in circuits under development. The pattern generator can take the place of missing devices, or can act as a stimulus to functionally test prototypes. Pattern Generator Overview (see page 9) Connecting Output Signals to the Device Under Test (see page 11) Selecting the Correct Probe Pod (see page 12) Connecting the Probe Pods (see page 32) Configuring the Pattern Generator (see page 35) Selecting the Output Mode (Channels/Speed Trade- off) (see page 36) Selecting the Clock Source (see page 37) Assigning Bus/Signal Names to Pattern Generator Probes (see page 39) Creating Vector Sequences (see page 53) Creating the Initialization Sequence (see page 55) Creating the Main Sequence (see page 58) Inserting Vectors and Instructions (see page 60) Filling Vectors with Automatically- Generated Patterns (see page 70) Editing Sequences (see page 79) Editing Macros (see page 85) Setting Vector Sequence Display Options (see page 90) Running and Stopping Pattern Generator Output (see page 99) Saving and Loading Pattern Generator Configurations (see page 101) Exporting and Importing Vector Sequences (see page 103) Pattern Generator Reference (see page 143) Pattern Generator Control, COM Automation (see page 145) Pattern Generator Setup, XML Format (see page 147) Using the Pattern Generator Online Help 3

4 4 Using the Pattern Generator Online Help

5 Contents Pattern Generator At a Glance 3 1 Pattern Generator Overview 2 Connecting Output Signals to the Device Under Test Selecting the Correct Probe Pod 12 Data Pod Descriptions 12 Clock Pod Descriptions 21 Pod Dimensions (in millimeters) 30 Data Cable Characteristics without a Data Pod 30 Clock Cable Characteristics without a Clock Pod 31 Connecting the Probe Pods 32 Direct Pod-to-Board Connection 32 Jumper Cable-to-Pod Connection 32 Probe Lead Set to Board Pin Connection 33 3 Configuring the Pattern Generator Selecting the Output Mode (Channels/Speed Trade-off) 36 Selecting the Clock Source 37 4 Assigning Bus/Signal Names to Pattern Generator Probes To add a new bus or signal 41 To delete a bus or signal 42 To rename a bus or signal 43 To assign channels in the default bit order 44 To assign channels, selecting the bit order 45 To reorder bits by editing the Channels Assigned string 46 To set the default number base 48 To set polarity 49 To add user comments 50 To add a folder 51 To sort bus/signal names 52 Using the Pattern Generator Online Help 5

6 5 Creating Vector Sequences Creating the Initialization Sequence 55 Creating the Main Sequence 58 Inserting Vectors and Instructions 60 To insert Vectors 61 To insert Break instructions 61 To insert Wait External Event instructions 62 To insert Send Arm instructions 64 To insert Wait for Arm instructions 65 To insert Start/End Loop instructions 65 To insert User-Defined Macro instructions 67 Filling Vectors with Automatically-Generated Patterns 70 To fill with Fixed patterns 71 To fill with Count patterns 72 To fill with Rotate patterns 73 To fill with Toggle patterns 75 To fill with Pseudo-Random patterns 76 Finding Instructions or Vectors 78 Editing Sequences 79 To delete lines 79 To cut, copy, and paste lines 80 To cut, copy, and paste cell text 81 To cut, copy, and paste columns 82 To go to a line number 82 To select lines 83 To navigate in vector sequences 83 Editing Macros 85 To add a macro 86 To delete a macro 86 To rename a macro 86 To copy a macro 87 To define macro parameters 88 To use parameters in the macro sequence 88 6 Using the Pattern Generator Online Help

7 Setting Vector Sequence Display Options 90 To adjust column widths 90 To set the numeric base 90 To change column colors 91 To change column data alignment 92 To change the font size 93 To change instruction colors 94 To specify a macro's color 96 6 Running and Stopping Pattern Generator Output 7 Saving and Loading Pattern Generator Configurations 8 Exporting and Importing Vector Sequences Exporting Vector Sequences to CSV Format Files 104 Importing Vector Sequences from CSV Format Files 105 Pattern Generator CSV File Format 106 Importing PattGen Binary (PGB) Format Files 116 Creating a PattGen Binary File 117 Converting Agilent 16522A ASCII Files 132 Creating an ASCII File 133 Converting Series PGB Files Pattern Generator Reference Key Characteristics Pattern Generator Control, COM Automation 11 Pattern Generator Setup, XML Format <BusSignal> Element 148 <BusSignals> Element 149 <BusSignalSetup> Element 150 <Channels> Element 151 <Clocking> Element 152 <ClockingSetup> Element 153 <Module> Element 154 <Sequence> Element 155 Using the Pattern Generator Online Help 7

8 <SequenceSetup> Element 156 Index 8 Using the Pattern Generator Online Help

9 Using the Pattern Generator Online Help 1 Pattern Generator Overview The Agilent Technologies 16720A pattern generator is a tool that generates digital signals. It is used in applications that require an external source to simulate digital circuitry or generate digital signals for functionally testing prototype hardware. Combined with the analog and digital measurement capabilities of the logic analysis system, you have a tightly integrated solution to your digital stimulus and response measurement needs. Steps in Using the Pattern Generator Re-using Pattern Generator Programs The exact output pattern, clock type and speed, and number of required signals depends on your specific application. How you configure the pattern generator and what kind of signal generation sequence you create will vary. However, from a procedural standpoint, the steps are the same each time to set up, create a sequence, and start the pattern generator. 1 Select the probing (see page 12) that is compatible with your device under test. 2 Set the Output Mode (see page 36) and the Clock Source (see page 37) parameters. 3 Connect the probes (see page 32) to your circuit and define buses and signals (see page 39) in the pattern generator user interface. 4 Create a sequence of test vectors (see page 53) to generate the desired output signals. 5 Run (see page 99) the pattern generator and measure the device under test for the desired results. After you set up a pattern generator configuration, you may want to store it away so you can use it again. Perhaps you want to create a set of test routines or circuit simulators. There are three ways to handle re- usable configurations. You can reload previously saved (see page 101) pattern generator configurations. Macros and loops are restored from ALA format configuration files as originally defined. The compiled vector sequence (without loops and macros) is restored from XML format configuration files. 9

10 1 Pattern Generator Overview You can import previously exported data from comma- separated value (CSV) format files (see page 105). CSV format files contain a compiled version of the data; in other words, macros are expanded and loops are shown as a repeated sequence of vectors. You can import data from PattGen Binary (PGB) format files (see page 116). NOTE You can convert 16522A pattern generator ASCII format files (see page 132) to comma-separated value (CSV) and XML format files containing vector data and setup information, respectively. NOTE When series logic analysis system configuration files contain pattern generator data that you want to reuse, you can export the data to PattGen Binary (PGB) format files (from within the series logic analysis system) and convert them to to the series PGB format (see page 140). See Also Key Characteristics (see page 144) 10 Using the Pattern Generator Online Help

11 Using the Pattern Generator Online Help 2 Connecting Output Signals to the Device Under Test Selecting the Correct Probe Pod (see page 12) Data Pod Descriptions (see page 12) Clock Pod Descriptions (see page 21) Pod Dimensions (see page 30) Data Cable Characteristics without a Data Pod (see page 30) Clock Cable Characteristics without a Clock Pod (see page 31) Connecting the Probe Pods (see page 32) Direct Pod- to- Board Connection (see page 32) Jumper Cable- to- Pod Connection (see page 32) Probe Lead Set to Board Pin Connection (see page 33) 11

12 2 Connecting Output Signals to the Device Under Test Selecting the Correct Probe Pod The following equivalent circuit information is provided to help you select the appropriate clock and data pods for your application. Data Pod Descriptions (see page 12) 10461A TTL Data Pod (see page 13) 10462A 3- State TTL/CMOS Data Pod (see page 14) 10464A ECL Data Pod (terminated) (see page 14) 10465A ECL Data Pod (unterminated) (see page 15) 10466A 3- State TTL/3.3 V Data Pod (see page 16) 10469A PECL Data Pod (see page 16) 10471A LVPECL Data Pod (see page 17) 10473A 3- State 2.5 V Data Pod (see page 18) 10476A 3- State 1.8 V Data Pod (see page 19) 10483A 3- State 3.3 V Data Pod (see page 20) E8141A LVDS Data Pod (see page 20) Clock Pod Descriptions (see page 21) 10460A TTL Clock Pod (see page 22) 10463A ECL Clock Pod (see page 23) 10468A PECL Clock Pod (see page 24) 10470A LVPECL Clock Pod (see page 25) 10472A 2.5 V Clock Pod (see page 26) 10475A 1.8 V Clock Pod (see page 27) 10477A 3.3 V Clock Pod (see page 28) E8140A LVDS Clock Pod (see page 29) Pod Dimensions (see page 30) Data Cable Characteristics without a Data Pod (see page 30) Clock Cable Characteristics without a Clock Pod (see page 31) See Also Connecting the Probe Pods (see page 32) Data Pod Descriptions 10461A TTL Data Pod (see page 13) 10462A 3- State TTL/CMOS Data Pod (see page 14) 10464A ECL Data Pod (terminated) (see page 14) 10465A ECL Data Pod (unterminated) (see page 15) 12 Using the Pattern Generator Online Help

13 Connecting Output Signals to the Device Under Test A 3- State TTL/3.3 V Data Pod (see page 16) 10469A PECL Data Pod (see page 16) 10471A LVPECL Data Pod (see page 17) 10473A 3- State 2.5 V Data Pod (see page 18) 10476A 3- State 1.8 V Data Pod (see page 19) 10483A 3- State 3.3 V Data Pod (see page 20) E8141A LVDS Data Pod (see page 20) See Also Clock Pod Descriptions (see page 21) Connecting the Probe Pods (see page 32) 10461A TTL Data Pod Output type: 10H125 with 100 ohm in series Maximum clock: Skew: 200 MHz Recommended lead set: 10474A (see page 33) Typical less than 2 ns; worst case 4 ns (see About Data Pod Skew Characteristics (see page 21)) Pinout See Also Pod Dimensions (see page 30) Clock Pod Descriptions (see page 21) Connecting the Probe Pods (see page 32) Using the Pattern Generator Online Help 13

14 2 Connecting Output Signals to the Device Under Test 10462A 3-State TTL/CMOS Data Pod Output type: 74ACT11244 with 100 ohm in series; 10H125 on non-3-state channel 7 (see Using the "3-STATE IN" Enable Input (see page 21)) 3-State enable: Maximum clock: Skew: Negative true, 100K ohm to GND, enabled on no connect 100 MHz Recommended lead set: 10474A (see page 33) Typical less than 4 ns; worst case 12 ns (see About Data Pod Skew Characteristics (see page 21)) Pinout See Also Pod Dimensions (see page 30) Clock Pod Descriptions (see page 21) Connecting the Probe Pods (see page 32) 10464A ECL Data Pod (terminated) Output type: 10H115 with 348 ohm pulldown, 42 ohm in series Maximum clock: Skew: 300 MHz Recommended lead set: 10474A (see page 33) Typical less than 1 ns; worst case 2 ns (see About Data Pod Skew Characteristics (see page 21)) 14 Using the Pattern Generator Online Help

15 Connecting Output Signals to the Device Under Test 2 Pinout See Also Pod Dimensions (see page 30) Clock Pod Descriptions (see page 21) Connecting the Probe Pods (see page 32) 10465A ECL Data Pod (unterminated) Output type: 10H115 (no termination) Maximum clock: Skew: 300 MHz Recommended lead set: 10347A (see page 33) Typical less than 1 ns; worst case 2 ns (see About Data Pod Skew Characteristics (see page 21)) Pinout See Also Pod Dimensions (see page 30) Clock Pod Descriptions (see page 21) Connecting the Probe Pods (see page 32) Using the Pattern Generator Online Help 15

16 2 Connecting Output Signals to the Device Under Test 10466A 3-State TTL/3.3 V Data Pod Output type: 74LVT244 with 100 ohm in series; 10H125 on non-3-state channel 7 (see Using the "3-STATE IN" Enable Input (see page 21)) 3-State enable: Maximum clock: Skew: negative true, 100K ohm to GND, enabled on no connect 200 MHz Recommended lead set: 10474A (see page 33) Typical less than 3 ns; worst case 7 ns (see About Data Pod Skew Characteristics (see page 21)) Pinout See Also Pod Dimensions (see page 30) Clock Pod Descriptions (see page 21) Connecting the Probe Pods (see page 32) 10469A PECL Data Pod Output type: 100EL09 (5V) with 348 ohm pulldown to ground and 42 ohm in series Maximum clock: 300 MHz 16 Using the Pattern Generator Online Help

17 Connecting Output Signals to the Device Under Test 2 Skew: Recommended lead set: 10498A (see page 33) Typical less than 500 ps; worst case 1 ns (see About Data Pod Skew Characteristics (see page 21)) Pinout See Also Pod Dimensions (see page 30) Clock Pod Descriptions (see page 21) Connecting the Probe Pods (see page 32) 10471A LVPECL Data Pod Output type: 100LVEL90 (3.3V) with 215 ohm pulldown to ground and 42 ohm in series Maximum clock: Skew: 300 MHz Recommended lead set: 10498A (see page 33) Typical less than 500 ps; worst case 1 ns (see About Data Pod Skew Characteristics (see page 21)) Pinout See Also Pod Dimensions (see page 30) Using the Pattern Generator Online Help 17

18 2 Connecting Output Signals to the Device Under Test Clock Pod Descriptions (see page 21) Connecting the Probe Pods (see page 32) 10473A 3-State 2.5 V Data Pod Output type: 74AVC State enable: Maximum clock: Skew: negative true, 38K ohm to GND, enabled on no connect (see Using the "3-STATE IN" Enable Input (see page 21)) 300 MHz Recommended lead set: 10498A (see page 33) Typical less than 1 ns; worst case 2 ns (see About Data Pod Skew Characteristics (see page 21)) Pinout See Also Pod Dimensions (see page 30) Clock Pod Descriptions (see page 21) Connecting the Probe Pods (see page 32) 18 Using the Pattern Generator Online Help

19 Connecting Output Signals to the Device Under Test A 3-State 1.8 V Data Pod Output type: 74AVC State enable: Maximum clock: Skew: negative true, 38K ohm to GND, enabled on no connect (see Using the "3-STATE IN" Enable Input (see page 21)) 300 MHz Recommended lead set: 10498A (see page 33) Typical less than 1.5 ns; worst case 2.5 ns (see About Data Pod Skew Characteristics (see page 21)) Pinout See Also Pod Dimensions (see page 30) Clock Pod Descriptions (see page 21) Connecting the Probe Pods (see page 32) Using the Pattern Generator Online Help 19

20 2 Connecting Output Signals to the Device Under Test 10483A 3-State 3.3 V Data Pod Output type: 74AVC State enable: Maximum clock: Skew: negative true, 38K ohm to GND, enable on no connect (see Using the "3-STATE IN" Enable Input (see page 21)) 300 MHz Recommended lead set: 10498A (see page 33) Typical less than 1 ns; worst case 2 ns (see About Data Pod Skew Characteristics (see page 21)) Pinout See Also Pod Dimensions (see page 30) Clock Pod Descriptions (see page 21) Connecting the Probe Pods (see page 32) E8141A LVDS Data Pod Output type: 65LVDS389 (LVDS data lines); 10H125 (TTL non-3-state channel 7, see Using the "3-STATE IN" Enable Input (see page 21)) 3-State enable: positive true TTL; no connect=enabled 20 Using the Pattern Generator Online Help

21 Connecting Output Signals to the Device Under Test 2 Maximum clock: Skew: 300 MHz Recommended lead set: E8142A (see page 33) Typical less than 1 ns; worst case 2 ns (see About Data Pod Skew Characteristics (see page 21)) Pinout See Also Pod Dimensions (see page 30) Clock Pod Descriptions (see page 21) Connecting the Probe Pods (see page 32) About Data Pod Skew Characteristics Typical skew measurements made at the pod connector with approximately 10 pf/50k ohm load to GND; worst case skew numbers are a calculation of worst case conditions through circuits. Both numbers apply to any channel within a single or multiple module system. Using the "3-STATE IN" Enable Input The pattern generator always holds the last set of state vectors when it is stopped. When a logic "1" level is applied to the "3- STATE IN" input, the 3- stateable outputs are placed into a "high impedance" state. When a logic "0" level is applied to the "3- STATE IN" input, or when the input is not connected, the 3- stateable outputs are active, and the levels of the last vector are output. Data pods with 3- state control provide a parallel channel 7 output that is non- 3- stateable. By looping this output back into the "3- STATE IN" input, the pattern generator's channel 7 output can be used as a 3- state control signal. Clock Pod Descriptions 10460A TTL Clock Pod (see page 22) 10463A ECL Clock Pod (see page 23) 10468A PECL Clock Pod (see page 24) Using the Pattern Generator Online Help 21

22 2 Connecting Output Signals to the Device Under Test 10470A LVPECL Clock Pod (see page 25) 10472A 2.5 V Clock Pod (see page 26) 10475A 1.8 V Clock Pod (see page 27) 10477A 3.3 V Clock Pod (see page 28) E8140A LVDS Clock Pod (see page 29) See Also Data Pod Descriptions (see page 12) Connecting the Probe Pods (see page 32) 10460A TTL Clock Pod Clock output type: 10H125 with 42 ohm series; true & inverted Clock output rate: Clock out delay: Clock input type: 100 MHz maximum Approximately 8 ns total in 14 steps TTL - 10H124 Clock input rate: DC to 100 MHz Pattern input type: TTL - 10H124 (no connect is logic 1) Clock-in to clock-out: Approximately 30 ns Pattern-in to recognition: Approximately 15 ns + 1 clk period Recommended lead set: 10474A (see page 33) Pinout See Also Pod Dimensions (see page 30) Data Pod Descriptions (see page 12) 22 Using the Pattern Generator Online Help

23 Connecting Output Signals to the Device Under Test 2 Connecting the Probe Pods (see page 32) 10463A ECL Clock Pod Clock output type: 10H116 differential unterminated; differential with 348 ohm to -5.2v and 42 ohm series Clock output rate: Clock out delay: Clock input type: 300 MHz maximum Approximately 8 ns total in 14 steps ECL - 10H116 with 50K ohm to -5.2v Clock input rate: DC to 300 MHz Pattern input type: ECL - 10H116 with 50K ohm (no connect is logic 0) Clock-in to clock-out: Approximately 30 ns Pattern-in to recognition: Approximately 15 ns + 1 clk period Recommended lead set: 10474A (see page 33) Pinout See Also Pod Dimensions (see page 30) Data Pod Descriptions (see page 12) Connecting the Probe Pods (see page 32) Using the Pattern Generator Online Help 23

24 2 Connecting Output Signals to the Device Under Test 10468A PECL Clock Pod Clock output type: 100EL90 (5V) with 348 ohm pulldown to ground and 42 ohm in series Clock output rate: Clock out delay: Clock input type: 300 MHz maximum Approximately 8 ns total in 14 steps 100EL91 PECL (5V), no termination Clock input rate: DC to 300 MHz Pattern input type: 100EL91 PECL (5V), no termination (no connect is logic 0) Clock-in to clock-out: Approximately 30 ns Pattern-in to recognition: Approximately 15 ns + 1 clk period Recommended lead set: 10498A (see page 33) Pinout See Also Pod Dimensions (see page 30) Data Pod Descriptions (see page 12) Connecting the Probe Pods (see page 32) 24 Using the Pattern Generator Online Help

25 Connecting Output Signals to the Device Under Test A LVPECL Clock Pod Clock output type: 100LVEL90 (3.3V) with 215 ohm pulldown to ground and 42 ohm in series Clock output rate: Clock out delay: Clock input type: 300 MHz maximum Approximately 8 ns total in 14 steps 100LVEL91 PECL (3.3V), no termination Clock input rate: DC to 300 MHz Pattern input type: 100LVEL91 PECL (3.3V), no termination (no connect is logic 0) Clock-in to clock-out: Approximately 30 ns Pattern-in to recognition: Approximately 15 ns + 1 clk period Recommended lead set: 10498A (see page 33) Pinout See Also Pod Dimensions (see page 30) Data Pod Descriptions (see page 12) Connecting the Probe Pods (see page 32) Using the Pattern Generator Online Help 25

26 2 Connecting Output Signals to the Device Under Test 10472A 2.5 V Clock Pod Clock output type: 74AVC16244 Clock output rate: Clock out delay: Clock input type: 200 MHz maximum Approximately 8 ns total in 14 steps 74AVC16244 (3.6 V maximum) Clock input rate: DC to 200 MHz Pattern input type: 74AVC16244 (3.6 V maximum; no connect is logic 0) Clock-in to clock-out: Approximately 30 ns Pattern-in to recognition: Approximately 15 ns + 1 clk period Recommended lead set: 10498A (see page 33) Pinout See Also Pod Dimensions (see page 30) Data Pod Descriptions (see page 12) Connecting the Probe Pods (see page 32) 26 Using the Pattern Generator Online Help

27 Connecting Output Signals to the Device Under Test A 1.8 V Clock Pod Clock output type: 74AVC16244 Clock output rate: Clock out delay: Clock input type: 200 MHz maximum Approximately 8 ns total in 14 steps 74AVC16244 (3.6 V maximum) Clock input rate: DC to 200 MHz Pattern input type: 74AVC16244 (3.6 V maximum; no connect is logic 0) Clock-in to clock-out: Approximately 30 ns Pattern-in to recognition: Approximately 15 ns + 1 clk period Recommended lead set: 10498A (see page 33) Pinout See Also Pod Dimensions (see page 30) Data Pod Descriptions (see page 12) Connecting the Probe Pods (see page 32) Using the Pattern Generator Online Help 27

28 2 Connecting Output Signals to the Device Under Test 10477A 3.3 V Clock Pod Clock output type: 74AVC16244 Clock output rate: Clock out delay: Clock input type: 200 MHz maximum Approximately 8 ns total in 14 steps 74AVC16244 (3.6 V maximum) Clock input rate: DC to 200 MHz Pattern input type: 74AVC16244 (3.6 V maximum; no connect is logic 0) Clock-in to clock-out: Approximately 30 ns Pattern-in to recognition: Approximately 15 ns + 1 clk period Recommended lead set: 10498A (see page 33) Pinout See Also Pod Dimensions (see page 30) Data Pod Descriptions (see page 12) Connecting the Probe Pods (see page 32) 28 Using the Pattern Generator Online Help

29 Connecting Output Signals to the Device Under Test 2 E8140A LVDS Clock Pod Clock output type: 65LVDS179 (LVDS) and 10H125 (TTL) Clock output rate: Clock out delay: Clock input type: 200 MHz maximum (LVDS and TTL) Approximately 8 ns total in 14 steps 65LVDS179 (LVDS with 100 ohm) Clock input rate: DC to 150 MHz (LVDS) Pattern input type: 10H124 (TTL) (no connect is logic 1) Clock-in to clock-out: Approximately 30 ns Pattern-in to recognition: Approximately 15 ns + 1 clk period Recommended lead set: E8142A (see page 33) Pinout See Also Pod Dimensions (see page 30) Data Pod Descriptions (see page 12) Connecting the Probe Pods (see page 32) Using the Pattern Generator Online Help 29

30 2 Connecting Output Signals to the Device Under Test Pod Dimensions (in millimeters) See Also Data Pod Descriptions (see page 12) Clock Pod Descriptions (see page 21) Connecting the Probe Pods (see page 32) Data Cable Characteristics without a Data Pod The data cables without a data pod provide an ECL- terminated (470 ohm; to V) differential signal. These signals are usable when received by a differential receiver, preferably with a 100 ohm termination across the lines. These signals should not be used single- ended due to the slow fall time and shifted voltage threshold; they are not ECL compatible. 30 Using the Pattern Generator Online Help

31 Connecting Output Signals to the Device Under Test 2 Clock Cable Characteristics without a Clock Pod The clock out signals (CLKOUT and not- CLKOUT) without a clock pod provide an ECL- terminated (215 ohm to V) differential signal. These signals are usable when received by a differential receiver, preferably with a 100 ohm termination across the lines. These signals should not be used single- ended due to the slow fall time and shifted voltage threshold; they are not ECL compatible. Using the Pattern Generator Online Help 31

32 2 Connecting Output Signals to the Device Under Test Connecting the Probe Pods NOTE Clock and Data pods are required for a proper signal interface. There are different types (see page 12) available, and they should match your device under test circuit characteristics. In addition, depending on the Output Mode (see page 36) selected, some pods may not be available for use. Direct Pod- to- Board Connection (see page 32) Jumper Cable- to- Pod Connection (see page 32) Probe Lead Set to Board Pin Connection (see page 33) Direct Pod-to-Board Connection Plug the pod directly into the 3M series, or similar alternative connector on the PC board. Jumper Cable-to-Pod Connection Use this method when you have clearance problems on the PC board. Construct a flat- ribbon cable and connect as shown above. 32 Using the Pattern Generator Online Help

33 Connecting Output Signals to the Device Under Test 2 NOTE You can obtain equivalent connectors from sources other than 3M. Probe Lead Set to Board Pin Connection The following probe lead assemblies are available for connecting to PC board pins. E8142A 8- channel LVDS probe lead set (6- inch lead wire length) A 8- channel probe lead set (6- inch lead wire length) A 8- channel probe lead set (12- inch lead wire length) A 8- channel probe lead set, 50- ohm coaxial for unterminated signals. The probe tips of both lead sets plug directly into any 0.1-inch grid with to inch diameter round pins or inch square pins. These probe tips work with the surface mount grabbers and the through- hole grabbers. NOTE The LVDS Data Pod must be connected to the leads in such a way that the striped row of cables faces up. Using the Pattern Generator Online Help 33

34 2 Connecting Output Signals to the Device Under Test 34 Using the Pattern Generator Online Help

35 Using the Pattern Generator Online Help 3 Configuring the Pattern Generator Selecting the Output Mode (Channels/Speed Trade- off) (see page 36) Selecting the Clock Source (see page 37) 35

36 3 Configuring the Pattern Generator Selecting the Output Mode (Channels/Speed Trade-off) The output mode determines the channel width, available pods, and the frequency range for both the internal and external clock. The choice you make may be determined by trade- offs between clock speed and channel width. Because the output mode affects clock frequency ranges, available pods, and channel width, keep your mode selection in mind when designing the circuit's hardware interface and when mapping probe connections between the test circuit and the labels of the pattern generator. This table shows the difference between the Full- Channel 180 Mbits/s mode and the Half- Channel 300 Mbits/s mode. Full Channel 180 Mbits/s Pods available Pods 1, 2, 3, 4, 5, 6 Pods 1, 3, 5 Maximum channels 48; 8 per pod 24; 8 per pod Maximum external clock frequency Maximum internal clock frequency Minimum external clock frequency Minimum internal clock frequency 180 MHz 300 MHz 180 MHz 300 MHz DC 1MHz Half Channel 300 Mbits/s DC 1MHz Maximum vectors 8,388,608 16,777, Using the Pattern Generator Online Help

37 Configuring the Pattern Generator 3 Selecting the Clock Source Internal Clock Source The Clock Source field toggles between internal and external. The internal clock source is supplied by the pattern generator and controls the frequency used to output the vectors to the system under test. The external clock is provided by the user or the system under test, and is input to the pattern generator through the CLK IN probe of a clock pod. An advantage of using an external clock is that you synchronize the vector output of the pattern generator to the system under test. No matter which clock source is used, vectors are always output on the rising edge of the clock. Use an internal clock source when you want to have control over the frequency of the output vectors and it is not important for the output vectors to be synchronized to the system under test. You select clock frequencies in increments of 1 MHz. If you use the keypad to select a value between the step intervals, the value is rounded to the nearest interval. Maximum internal clock frequency Minimum internal clock frequency Full Channel 180 Mbits/s Half Channel 300 Mbits/s 180 MHz 300 MHz 1MHz 1MHz Using the Pattern Generator Online Help 37

38 3 Configuring the Pattern Generator External Clock Source Use an external clock source when you want to synchronize the frequency of the output vectors to the system under test. With this mode selected, you do not have direct control over the frequency of the output vectors. Output vector frequency will be the same as the external clock. Maximum external clock frequency Minimum external clock frequency Full Channel 180 Mbits/s Half Channel 300 Mbits/s 180 MHz 300 MHz DC DC CAUTION If the external clock is faster than the maximum period, the Agilent 16720A pattern generator will produce erroneous output vectors. Clock Out Delay The clock out delay setting lets you position the output clock with respect to the data. The zero setting is uncalibrated and should be measured to determine the initial position with respect to the data. You can delay the clock in 500 ps increments. 38 Using the Pattern Generator Online Help

39 Using the Pattern Generator Online Help 4 Assigning Bus/Signal Names to Pattern Generator Probes Before you can set up pattern generator vector sequences, you must define bus/signal names for the channels on which you want to output data. The Buses/Signals tab is accessed through the menu bar's Setup>(Pattern Generator Module)>Bus/Signal... command. The Buses/Signals tab is used to map (assign) bus and signal names to the pod and channel connections of the probes. Through the Display button, you can select what bus/signal information is displayed. The following tasks are performed in the Buses/Signals tab: To add a new bus or signal (see page 41) To delete a bus or signal (see page 42) To rename a bus or signal (see page 43) To assign channels in the default bit order (see page 44) To assign channels, selecting the bit order (see page 45) To reorder bits by editing the Channels Assigned string (see page 46) To set the default number base (see page 48) To set polarity (see page 49) To add user comments (see page 50) To add a folder (see page 51) To sort bus/signal names (see page 52) Through the Display button, you can select what bus/signal setup information is displayed (channels assigned, width, polarity, default base, comment, or channel numbers). 39

40 4 Assigning Bus/Signal Names to Pattern Generator Probes 40 Using the Pattern Generator Online Help

41 Assigning Bus/Signal Names to Pattern Generator Probes 4 To add a new bus or signal Before you can assign pattern generator probe channels to bus/signal names, you must first create the bus/signal names. 1 From the menu bar, select Setup>(Pattern Generator Module)>Bus/Signal... 2 In the Buses/Signals tab of the Pattern Generator Setup dialog, select Add Bus/Signal... 3 In the Add Bus/Signal dialog, enter the name of the bus/signal. 4 Click OK. See Also To delete a bus or signal (see page 42) To rename a bus or signal (see page 43) To assign channels in the default bit order (see page 44) To assign channels, selecting the bit order (see page 45) Using the Pattern Generator Online Help 41

42 4 Assigning Bus/Signal Names to Pattern Generator Probes To delete a bus or signal To delete an individual bus or signal The delete bus or signal feature allows you to remove buses and signals individually or all at once. To delete an individual bus or signal (see page 42) To delete all buses and signals (see page 42) 1 From the menu bar, select Setup>(Pattern Generator Module)>Bus/Signal... 2 In the Buses/Signals tab of the Pattern Generator Setup dialog, highlight the bus or signal you want to delete. 3 Click Delete. To delete all buses and signals 1 From the menu bar, select Setup>(Pattern Generator Module)>Bus/Signal... 2 In the Buses/Signals tab of the Pattern Generator Setup dialog, click Delete All. 42 Using the Pattern Generator Online Help

43 Assigning Bus/Signal Names to Pattern Generator Probes 4 To rename a bus or signal The rename bus/signal feature allows you to change bus and signal names. All pod channel assignments for the renamed bus/signal remain unchanged. 1 From the menu bar, select Setup>(Pattern Generator Module)>Bus/Signal... 2 In the Buses/Signals tab of the Pattern Generator Setup dialog, right- click the bus or signal name and choose Rename... 3 Enter the new bus or signal name. 4 Click OK. See Also To add a new bus or signal (see page 41) To delete a bus or signal (see page 42) Using the Pattern Generator Online Help 43

44 4 Assigning Bus/Signal Names to Pattern Generator Probes To assign channels in the default bit order 1 From the menu bar, select Setup>(Pattern Generator Module)>Bus/Signal... 2 In the Buses/Signals tab of the Pattern Generator Setup dialog, select squares in the grid to assign channels to bus and signal names. For each pattern generator output signal, you should have a black check mark mapping particular pod channels to bus/signal names. Unassigned channels are inactive. Example: In the picture below: channels 0-7 on pod F1 are mapped to My Bus 1 channels 0-7 on pod F2 are mapped to My Bus 2 channel 0 on pod F3 is mapped to My Signal 1 channel 1 on pod F3 is mapped to My Signal 2 NOTE You cannot assign any single output channel to more than one bus/signal. See Also To reorder bits by editing the Channels Assigned string (see page 46) To assign channels, selecting the bit order (see page 45) 44 Using the Pattern Generator Online Help

45 Assigning Bus/Signal Names to Pattern Generator Probes 4 To assign channels, selecting the bit order In cases where pattern generator connectors have been designed into a device under test, and buses on those connectors are not wired to consecutive pattern generator channels, you can assign channels to a bus name in a selected bit order. 1 From the menu bar, select Setup>(Pattern Generator Module)>Bus/Signal... 2 In the Buses/Signals tab, right- click the bus name, and choose Enable Channel Order Selection. 3 Start selecting squares in the grid to assign channels from the low order bit of the bus to the high order bit. The bit numbers are displayed as you select squares. To reset the default bit order The default bit order of assigned channels has higher bits on the left and lower on the right (in the Bus/Signal Setup dialog). To reset to the default bit order: Right- click the bus name, and uncheck Enable Channel Order Selection. See Also To reorder bits by editing the Channels Assigned string (see page 46) To assign channels in the default bit order (see page 44) Using the Pattern Generator Online Help 45

46 4 Assigning Bus/Signal Names to Pattern Generator Probes To reorder bits by editing the Channels Assigned string You can change the order of the bits in a bus name (assigned in either the default order (see page 44) or a selected order (see page 45)) by editing the Channels Assigned text string. 1 In the Buses/Signals tab of the Pattern Generator Setup dialog, click the Channels Assigned to the bus name. 2 In the Assign Channels dialog, enter the appropriate order of bits in the bus. Example Pod F1[0] Pod F1[7:0] Pod F1[3:0], Pod F2[7:4] Pod F1[7:0], Pod F2[7:0] Pod F1[0,1,2,3] Description Signal consisting of the first channel in the first pod. Bus consisting of all eight channels in Pod F1 in default order. Bus with four channels from first pod followed by four channels from second pod. Big endian, little endian switch on a 16-bit bus. Bus with bits in reverse order. 3 Click OK. Channel numbers are displayed for reordered bits in the Buses/Signals tab. 46 Using the Pattern Generator Online Help

47 Assigning Bus/Signal Names to Pattern Generator Probes 4 To reset the default bit order Either: Right- click the bus name, and uncheck Enable Channel Order Selection. Or: 1 Click the Channels Assigned to the bus name. 2 In the Assign Channels dialog, click Default Channel Order. 3 Click OK. See Also To assign channels (see page 44) Using the Pattern Generator Online Help 47

48 4 Assigning Bus/Signal Names to Pattern Generator Probes To set the default number base You can set the default number base for a bus when you create the bus. The default base is used in the Sequence and Macros tabs when inserting columns. Default base only affects new bus/signal columns; if you change default base for an existing bus or signal, you will not see the base change in the Sequence and Macros tabs. 1 From the main menu, select Setup>(Pattern Generator Module)>Bus/Signals... 2 In the Buses/Signals tab of the Pattern Generator Setup dialog, click Display and choose Default Base. 3 To change the default base for a bus or signal, click the default base value and select the new default base. 48 Using the Pattern Generator Online Help

49 Assigning Bus/Signal Names to Pattern Generator Probes 4 To set polarity You can define buses and signals with negative or positive polarity. This only affects the values displayed by the pattern generator; it lets you view or enter vectors in a different polarity. The default polarity is positive (1 = high). 1 From the main menu, select Setup>(Pattern Generator Module)>Bus/Signals... 2 In the Buses/Signals tab of the Pattern Generator Setup dialog, click Display and choose Polarity. 3 In the Polarity column that appears, toggle between + (positive) and (negative). Using the Pattern Generator Online Help 49

50 4 Assigning Bus/Signal Names to Pattern Generator Probes To add user comments You can attach comments to buses and signals. The comments appear in XML format configuration files. 1 From the main menu, select Setup>(Pattern Generator Module)>Bus/Signals... 2 In the Buses/Signals tab of the Pattern Generator Setup dialog, click Display and choose Comment. The Comment column appears. 3 In the Comment column, enter your comment for the bus or signal. NOTE Comments are intended as a descriptor to embellish a bus/signal name and not as a notepad. Comments can be up to 256 characters in length. 50 Using the Pattern Generator Online Help

51 Assigning Bus/Signal Names to Pattern Generator Probes 4 To add a folder The Add Folder... feature adds a Windows- style folder to the bus/signal list. Use folders to help organize bus and signal names when using many bus/signal names. 1 From the main menu, select Setup>(Pattern Generator Module)>Bus/Signals... 2 Right- click on a bus/signal name; then, choose Add Folder... 3 In the Add Folder dialog, enter the folder name, and click OK. The new folder appears directly below the highlighted bus/signal name. You can rename (see page 43) a folder just like you would a bus/signal name. Using the Pattern Generator Online Help 51

52 4 Assigning Bus/Signal Names to Pattern Generator Probes To sort bus/signal names You can sort bus/signal names and folder names to help organize them. 1 From the main menu, select Setup>(Pattern Generator Module)>Bus/Signals... 2 In the Buses/Signals tab of the Patter Generator Setup dialog, right- click on one of the bus/signal or folder names to be sorted; then, choose either Sort>Ascending or Sort>Descending. See Also To add a folder (see page 51) 52 Using the Pattern Generator Online Help

53 Using the Pattern Generator Online Help 5 Creating Vector Sequences Test vectors determine the pattern output at each clock cycle. Test vectors are positioned in a list called a sequence. When a sequence is run (see page 99), the list of vectors is executed in order of first vector to last vector. Vectors are always output on the rising edge of the clock. In every pattern generator application, you have two sequences. An INIT SEQUENCE (initialization sequence) is used to place your circuit or subsystem in a known state. The initialization sequence is followed by the MAIN SEQUENCE. The main sequence is used for the actual pattern generation that stimulates your circuit under test. The INIT sequence is only executed once, while the MAIN sequence loops if you start repetitive execution. Using Hardware and Software Instructions In addition to test vectors, both INIT and MAIN sequences can include predefined instruction (see page 60) elements. Instructions can create Breaks, Loops, Wait for External Events or Arm, or Send an Arm signal to another instrument. The most useful instruction is the User- Defined Macro which lets you create reusable sequences that accept parameters. This flexibility is very useful in prototype turn- on and environmental testing. For more information on INIT and MAIN sequences and how to create them, see the following topics. Creating the Initialization Sequence (see page 55) Creating the Main Sequence (see page 58) Inserting Vectors and Instructions (see page 60) To insert Vectors (see page 61) To insert Break instructions (see page 61) To insert Wait External Event instructions (see page 62) To insert Send Arm instructions (see page 64) To insert Wait for Arm instructions (see page 65) To insert Start/End Loop instructions (see page 65) To insert User- Defined Macro instructions (see page 67) Filling Vectors with Automatically- Generated Patterns (see page 70) To fill with Fixed patterns (see page 71) To fill with Count patterns (see page 72) 53

54 5 Creating Vector Sequences To fill with Rotate patterns (see page 73) To fill with Toggle patterns (see page 75) To fill with Pseudo- Random patterns (see page 76) Finding Instructions or Vectors (see page 78) Editing Sequences (see page 79) To delete lines (see page 79) To cut, copy, and paste lines (see page 80) To cut, copy, and paste cell text (see page 81) To cut, copy, and paste columns (see page 82) To go to a line number (see page 82) To select lines (see page 83) To navigate in vector sequences (see page 83) Editing Macros (see page 85) To add a macro (see page 86) To delete a macro (see page 86) To rename a macro (see page 86) To copy a macro (see page 87) To define macro parameters (see page 88) To use parameters in the macro sequence (see page 88) Setting Vector Sequence Display Options (see page 90) To adjust column widths (see page 90) To set the numeric base (see page 90) 54 Using the Pattern Generator Online Help

55 Creating Vector Sequences 5 Creating the Initialization Sequence The initialization (INIT) sequence is the first of two vector sequences that appear in the Sequence display. Use the INIT sequence to put the circuit or subsystem into a known starting condition. You can also use the INIT sequence to arm a logic analyzer or oscilloscope with the Send Arm instruction to begin a measurement before the MAIN sequence begins. If you leave the INIT sequence empty, it will be ignored. Creating the INIT Sequence The INIT sequence can contain hardware and software instructions (see page 60) as well as vector data. However, instructions are not allowed on the first two vector lines. 1 Select the Sequence tab, then select Init Start. 2 Select Insert Line After. 3 Repeat for each new vector line you want to insert. Using the Pattern Generator Online Help 55

56 5 Creating Vector Sequences 4 To specify the vector data, select the left- most character in the new vector line. 5 Enter in the desired vector data. As you enter the information, the default cursor wrap setting will roll the cursor left- to- right. 6 Optional - If applicable, insert an instruction (see page 60) instead of entering vector data. See Also Defining Buses and Signals (see page 39) Editing Sequences (see page 79) 56 Using the Pattern Generator Online Help

57 Creating Vector Sequences 5 Inserting Vectors and Instructions (see page 60) Editing Macros (see page 85) Running and Stopping Pattern Generator Output (see page 99) Using the Pattern Generator Online Help 57

58 5 Creating Vector Sequences Creating the Main Sequence The MAIN sequence is the second of two vector sequences that appear in Sequence. Use the MAIN sequence as the primary signal generation sequence. The MAIN sequence must contain at least two vectors to output. The MAIN sequence can contain hardware and software instructions (see page 60) as well as vector data. However, instructions are not allowed on the first two vector lines or the last vector line. 1 Select the Sequence tab, then select Main Start. 2 Select Insert Line After. 3 Repeat for each new vector line you want to insert. 4 To specify the vector data, select the left- most character in the new vector line. 58 Using the Pattern Generator Online Help

59 Creating Vector Sequences 5 5 Enter in the desired vector data. As you enter the information, the default cursor wrap setting will roll the cursor left- to- right. 6 Optional - If applicable, insert an instruction (see page 60) instead of entering vector data. See Also Defining Buses and Signals (see page 39) Editing Sequences (see page 79) Inserting Vectors and Instructions (see page 60) Editing Macros (see page 85) Running and Stopping Pattern Generator Output (see page 99) Using the Pattern Generator Online Help 59

60 5 Creating Vector Sequences Inserting Vectors and Instructions Vectors specify values that are output by the pattern generator. Instructions are like programming commands; they control the flow of vector output. There are two types of instructions: hardware and software. When you insert a line, it is a Vector with ditto data values (that is, values that are the same as the previous vector). You can edit the data values or change the Vector to one of the other instructions. Inserting Vectors To insert Vectors (see page 61) Inserting Hardware Instructions Inserting Software Instructions Instruction Rules Hardware instructions affect pattern generator or external hardware. To insert Break instructions (see page 61) To insert Wait External Event instructions (see page 62) To insert Send Arm instructions (see page 64) To insert Wait for Arm instructions (see page 65) Software instructions only affect the execution flow of the currently running sequence (although a User- Defined Macro will likely include hardware instructions). To insert Start/End Loop instructions (see page 65) To insert User- Defined Macro instructions (see page 67) The valid instructions vary between the Sequence tab and the Macro tab: Valid Instructions Sequence Tab Start Loop/Stop Loop Break Macro Wait for External Event Send Arm Wait for Arm Macro Tab Start Loop/Stop Loop Break Macro Wait for External Event There are also rules for when each type of instruction can and cannot be used: Instructions cannot be in the next two lines after Init Start or Main Start, and they cannot be in the next line after Macro Start. Instructions cannot be in the previous line before Main End. 60 Using the Pattern Generator Online Help

61 Creating Vector Sequences 5 Wait for External Events, Wait for Arm, Send Arm, and Break instructions must be preceded and followed by a vector line. There can be at most one Wait for Arm instruction and one Send Arm instruction in the Sequence tab. The Macro tab does not allow the Wait for Arm instruction or the Send Arm instruction. See Also Creating the Initialization Sequence (see page 55) Creating the Main Sequence (see page 58) Filling Vectors with Automatically- Generated Patterns (see page 70) Editing Sequences (see page 79) Editing Macros (see page 85) To insert Vectors A Vector tells the pattern generator to create the specified patterns. The cells in a vector line are editable. 1 In the Sequence or Macros tab, select the vector that you want to insert the new vector before or after. 2 Click Edit and choose Insert Line Before or Insert Line After. Pressing the Insert key on the keyboard is the same as choosing Insert Line Before. 3 If the vector bus/signal data values should be the same as the previous vector, leave the ditto values; otherwise, enter the desired bus/signal patterns. You can return an edited data value to the ditto value by cutting the contents of the data value cell. See Also Filling Vectors with Automatically- Generated Patterns (see page 70) To insert Break instructions When the Break instruction is encountered, the pattern generator stops the sequence and holds the outputs of the previous vector until you select resume or stop. 1 In the Sequence or Macros tab, select the vector that you want to insert the instruction before or after. 2 Click Edit and choose Insert Line Before or Insert Line After. Pressing the Insert key on the keyboard is the same as choosing Insert Line Before. Using the Pattern Generator Online Help 61